Render engines: replace number of x/y tiles with tile size

Now tile size is setting up explicitly instead of using number of tiles.

This allows better control over GPU performance, where having tiles aligned
to specific size makes lots of sense.

Still to come: need to update startup.blend  to make tiles size 64x64.

1 files changed, 16 insertions, 0 deletions

diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c
index 38213878ba1..38e92961075 100644
--- a/source/blender/blenloader/intern/readfile.c
+++ b/source/blender/blenloader/intern/readfile.c
@@ -8297,7 +8297,23 @@ static void do_versions(FileData *fd, Library *lib, Main *main)
 				}
 			}
 		}
+	}
+
+	{
+		/* convert tiles size from resolution and number of tiles */
+		{
+			Scene *scene;
 
+			for (scene = main->scene.first; scene; scene = scene->id.next) {
+				if (scene->r.tilex == 0 || scene->r.tiley == 1) {
+					/* scene could be set for panoramic rendering, so clamp with the
+					 * lowest possible tile size value
+					 */
+					scene->r.tilex = max_ii(scene->r.xsch * scene->r.size / scene->r.xparts / 100, 8);
+					scene->r.tiley = max_ii(scene->r.ysch * scene->r.size / scene->r.yparts / 100, 8);
+				}
+			}
+		}
 	}
 	
 	{